Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
CHURCH DALE W
   2. Issuer Name and Ticker or Trading Symbol
MECHANICAL TECHNOLOGY INC [MKTY] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
9 FRANKLIN STREET		 3. Date of Earliest Transaction (Month/Day/Year)
03/31/2006
(Street)

ALEXANDRIA, VA 22314		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 03/31/2006   S(1)   50,000 D $ 3.65 114,764 D  
Common Stock 03/31/2006   M(1)   45,000 A $ 0.56 159,764 D  
Common Stock 03/31/2006   S(1)   45,000 D $ 3.75 114,764 D  
Common Stock 03/31/2006   M(1)   10,000 A $ 2.8 124,764 D  
Common Stock 03/31/2006   S(1)   10,000 D $ 3.75 114,764 D  
Common Stock 04/03/2006   M(1)   20,000 A $ 1 134,764 D  
Common Stock 04/03/2006   S(1)   20,000 D $ 3.83 114,764 D  
Common Stock 04/03/2006   M(1)   45,000 A $ 1.33 159,764 D  
Common Stock 04/03/2006   S(1)   45,000 D $ 3.83 114,764 D  
Common Stock 04/03/2006   M(1)   20,000 A $ 1.91 134,764 D  
Common Stock 04/03/2006   S(1)   20,000 D $ 3.83 114,764 D  
Common Stock 04/03/2006   M(1)   25,000 A $ 1.91 139,764 D  
Common Stock 04/03/2006   S(1)   25,000 D $ 3.83 114,764 D  
Common Stock 04/04/2006   M(1)   5,000 A $ 1.91 119,764 D  
Common Stock 04/04/2006   S(1)   5,000 D $ 3.96 114,764 D  
Common Stock 04/04/2006   M(1)   20,000 A $ 2.49 134,764 D  
Common Stock 04/04/2006   S(1)   20,000 D $ 3.96 114,764 D  
Common Stock 04/04/2006   M(1)   6,250 A $ 2.8 121,014 D  
Common Stock 04/04/2006   S(1)   6,250 D $ 3.96 114,764 D  
Common Stock 04/04/2006   M(1)   2,500 A $ 2.8 117,264 D  
Common Stock 04/04/2006   S(1)   2,500 D $ 3.96 114,764 D  
Common Stock 04/04/2006   M(1)   23,333 A $ 2.8 138,097 D  
Common Stock 04/04/2006   S(1)   23,333 D $ 3.96 114,764 D  
Common Stock               2,250 I By Spouse

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
BOD 4/1/03 Stock Options (Rights to Buy) $ 1.91 04/03/2006   M(1)     20,000 04/01/2003(2) 03/31/2013 Common Stock 20,000 $ 1.91 0 D  
Chairman Amended 4/1/03 Stock Options $ 1.91 04/03/2006   M(1)     25,000 04/01/2004(3) 03/31/2013 Common Stock 25,000 $ 1.91 5,000 D  
Chairman Amended 4/1/03 Stock Options $ 1.91 04/04/2006   M(1)     5,000 04/01/2004(3) 03/31/2013 Common Stock 5,000 $ 1.91 0 D  
Employee Stock Option (Right to Buy) $ 1 04/03/2006   M(1)     20,000 10/22/2002(2) 10/21/2012 Common Stock 20,000 $ 1 0 D  
Employee Stock Options (Rights to Buy) $ 0.56 03/31/2006   M(1)     45,000 04/16/1997 04/15/2007 Common Stock 45,000 $ 0.56 0 D  
Employee Stock Options (Rights to Buy) $ 1.33 04/03/2006   M(1)     45,000 08/31/1998 08/30/2008 Common Stock 45,000 $ 1.33 0 D  
Stock Options (Right to Buy) $ 2.8 03/31/2006   M(1)     10,000 12/30/2005(4) 10/21/2012 Common Stock 10,000 $ 2.8 2,500 D  
Stock Options (Right to Buy) $ 2.8 04/04/2006   M(1)     2,500 12/30/2005(4) 10/21/2012 Common Stock 2,500 $ 2.8 0 D  
Stock Options (Right to Buy) $ 2.8 04/04/2006   M(1)     23,333 12/30/2005(4) 03/31/2013 Common Stock 23,333 $ 2.8 0 D  
Stock Options (Right to Buy) $ 2.8 04/04/2006   M(1)     6,250 12/30/2005(5) 09/14/2013 Common Stock 6,250 $ 2.8 6,250 D  
Stock Options (Right to Buy) $ 2.49 04/04/2006   M(1)     20,000 08/18/2005(2) 08/17/2015 Common Stock 20,000 $ 2.49 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
CHURCH DALE W
9 FRANKLIN STREET
ALEXANDRIA, VA 22314		   X      

Signatures

 By: Cynthia A. Scheuer as Attorney in Fact for   04/05/2006
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) The exercise of options and sales of common stock reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 28, 2006.
(2) Immediately Vested
(3) Options vest 50% on first anniversary date (4/1/04) and 50% on second anniversary date (4/1/05).
(4) Immediately Vested.
(5) 6,250 are immediately vested and the remainder vests 50% on 09/15/06 and 09/15/07, respectively.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

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